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Self-assembled nanocrystals discovered in Chelyabinsk meteorite

Current interest in nanomaterials is focused mostly on artificial materials fabricated for various applications. However, naturally occurring nanocrystal arrays, like those recently found in the meteorite that fell near Chelyabinsk in Russia on 15 February, 2013, can provide some new insights into t...

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Detalles Bibliográficos
Autores principales: Pavlov, D. A., Bobrov, A. I., Malekhonova, N. V., Pirogov, A. V., Nezhdanov, A. V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5394681/
https://www.ncbi.nlm.nih.gov/pubmed/24594587
http://dx.doi.org/10.1038/srep04280
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author Pavlov, D. A.
Bobrov, A. I.
Malekhonova, N. V.
Pirogov, A. V.
Nezhdanov, A. V.
author_facet Pavlov, D. A.
Bobrov, A. I.
Malekhonova, N. V.
Pirogov, A. V.
Nezhdanov, A. V.
author_sort Pavlov, D. A.
collection PubMed
description Current interest in nanomaterials is focused mostly on artificial materials fabricated for various applications. However, naturally occurring nanocrystal arrays, like those recently found in the meteorite that fell near Chelyabinsk in Russia on 15 February, 2013, can provide some new insights into the nature of nanomaterials, including the conditions for their natural occurrence. Here we report the results of our spectroscopic investigation of a fragment of the Chelyabinsk meteorite. The atomic structure of a fragment of the Chelyabinsk meteorite was studied using high-resolution transmission electron microscopy. Elemental and phase analysis of the object that was carried out by energy dispersive X-ray spectroscopy and electron diffraction revealed the presence of crystalline phases of different chemical compounds specific to meteorites of the LL group. In addition to single-crystal inclusions, extensive areas with ferropericlase nanocrystals having characteristic sizes from 3 to 15 nm were found in the structure of the meteorite. The study of the meteorite employing combination scattering of light (Raman) and photoluminescence spectroscopy methods has revealed quantum effects of ferropericlase nanoparticles and related photoluminescence with a maximum in the range of 675–800 nm.
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spelling pubmed-53946812017-04-20 Self-assembled nanocrystals discovered in Chelyabinsk meteorite Pavlov, D. A. Bobrov, A. I. Malekhonova, N. V. Pirogov, A. V. Nezhdanov, A. V. Sci Rep Article Current interest in nanomaterials is focused mostly on artificial materials fabricated for various applications. However, naturally occurring nanocrystal arrays, like those recently found in the meteorite that fell near Chelyabinsk in Russia on 15 February, 2013, can provide some new insights into the nature of nanomaterials, including the conditions for their natural occurrence. Here we report the results of our spectroscopic investigation of a fragment of the Chelyabinsk meteorite. The atomic structure of a fragment of the Chelyabinsk meteorite was studied using high-resolution transmission electron microscopy. Elemental and phase analysis of the object that was carried out by energy dispersive X-ray spectroscopy and electron diffraction revealed the presence of crystalline phases of different chemical compounds specific to meteorites of the LL group. In addition to single-crystal inclusions, extensive areas with ferropericlase nanocrystals having characteristic sizes from 3 to 15 nm were found in the structure of the meteorite. The study of the meteorite employing combination scattering of light (Raman) and photoluminescence spectroscopy methods has revealed quantum effects of ferropericlase nanoparticles and related photoluminescence with a maximum in the range of 675–800 nm. Nature Publishing Group 2014-03-05 /pmc/articles/PMC5394681/ /pubmed/24594587 http://dx.doi.org/10.1038/srep04280 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Pavlov, D. A.
Bobrov, A. I.
Malekhonova, N. V.
Pirogov, A. V.
Nezhdanov, A. V.
Self-assembled nanocrystals discovered in Chelyabinsk meteorite
title Self-assembled nanocrystals discovered in Chelyabinsk meteorite
title_full Self-assembled nanocrystals discovered in Chelyabinsk meteorite
title_fullStr Self-assembled nanocrystals discovered in Chelyabinsk meteorite
title_full_unstemmed Self-assembled nanocrystals discovered in Chelyabinsk meteorite
title_short Self-assembled nanocrystals discovered in Chelyabinsk meteorite
title_sort self-assembled nanocrystals discovered in chelyabinsk meteorite
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5394681/
https://www.ncbi.nlm.nih.gov/pubmed/24594587
http://dx.doi.org/10.1038/srep04280
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